SENSOR SIMULATOR FOR CALIBRATION AND SERVICE OF INTERNAL COMBUSTION ENGINES

摘要

Systems and methods for calibrating and diagnosing internal combustion engines include a sensor simulator (120) which generates a signal corresponding to a known simulated engine condition. The sensor simulator (120) includes at least one connector (122) adapted for engagement with a corresponding connector on the engine or vehicle wiring harness. The sensor simulator (120) may be connected to the engine control module (ECM 20) via the wiring harness in place of one or more actual sensors (22) to test calibration parameters or to troubleshoot engine malfunctions without uninstalling the actual sensor (22). An electric or electronic circuit within the sensor simulator (120) provides at lest one known value for use in testing calibration values and/or troubleshooting engine fault codes. Various types of sensors (22) may be simulated including position sensors, pressure sensors, temperature sensors, and level sensors.